请教 如何译最好?
1: The cranial -pharyngeal canal runs from the sella turcina down through the body of the sphenoid .Occasionally the basilar plate is incomplete ,so that the cranial-pharyngeal canal may persist, perforatingthe osseous base of the cranium.
2: The second possible explanation is s persistence of Seessel's pouch,which is an entodermal diverticulum from the cranial end of the foregut,immediately caudal to the dorsal end of the bucco-pharyngeal membrane,and which enters the base of the occipital region of the primitive head.